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From Ceki Gülcü <>
Subject Re: upgrading to nlog4j.1.2.17
Date Tue, 13 Sep 2005 07:48:55 GMT

Hello Nick,

Could you send me the a stack trace of the NoSuchMethodError?

As of NLOG4J 1.2.16, code compiled against log4j.jar will run fine with 
nlog4j.jar. However, the inverse is not true. Code compiled with NLOG4J 
will only run with NLOG4J. This means that your code, when compiled with 
NLOG4J, will depend on NLOG4J, which in my humble opinion is a rather 
reasonable requirement, especially if you consider that NLOG4J has SLF4J 
support which log4j does not have.

Considering the direction of compatibility, perhaps you are trying to 
access methods only available in nlog4j when only log4j.jar is available in 
the class path?

Being somewhat familiar with IDEA, I'd be happy to try reproduce the 
problem. Do you have a tiny project/test case to make it easy for me?


At 03:31 AM 9/13/2005, Nick Faiz wrote:
>Hey Alex (and others),
>I was originally sending this to Alex, as a follow up to an interrupted IM 
>chat, but thought it relevant to send to the dev list. It relates to 
>upgrading nlog4j.
>Check out under org.slf4j - you will find nlog4j.1.2.17 .
>We need to find a solution for this NoSuchMethodError - I keep seeing it 
>in IDEA but havent had time to test with ApacheDS in any other embedded 
>capacity. It's a blocker.
>Whenever I hit an nlog4j log statement in IDEA, when I have several 
>modules open, and when my own source code uses log4j but one of the 
>modules references ApacheDS, I see a NoSuchMethodError.
>Confluence - the enterprise wiki - tried it yet?

Ceki Gülcü

   The complete log4j manual:

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